The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2016
Filed:
Jul. 17, 2014
Ebm-papst Mulfingen Gmbh & Co. KG, Mulfingen, DE;
Thomas Sauer, Bad Mergentheim, DE;
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Abstract
A circuit for thermal protection and power regulation as a function of the current winding temperature of phase windings of an electric motor. The circuit including at least one temperature monitor switch (TW, TW) that measures the winding temperature of the phase windings, and that upon attainment of a specific winding temperature shuts off the winding current flowing through the windings, the circuit further including a PTC thermistor that is associated with the phase windings and that, upon attainment of a specific winding temperature, reduces power by means of a resistance increase, or shuts the motor off. One of the phase windings has the PTC thermistor. The other phase windings or winding has a temperature monitor switch. The PTC thermistor and the temperature monitor switch or switches (TW, TW) are connected in series to a voltage source.